Lock.



P. CORB'IN & E. L. mom

' LOCK.

APPLICATION FILED APB.7,1911.

Patented Dec. 5, 1911.

'muv-1 Il E llllhl' y l15. GORBINs E. L. TEIGH.

I LOCK.

PYLIOATIOI FILD APR. 7.1911.

V21,3010,727', Patented Dec.5, 1911.

2 SHEETS-SHEET 2.

coLU

spindle, such as 3.

UNITED sTATEs PATENT oEETcE. g

PHILIP CORBIN AND ERNEST L. TEICI-I, OF NEW BRITAIN, CONNECTICUT; SAID TEICH ASSIGNOR T0 SAID CORBIN.

LOCK.

Specification ofpLetters Patent.

Application led April 7, 1911.

Patented Dec. 5, 1911.

Serial No. 619,467.

To all whom it may concern:

Be it known that we, PHILIP CORBIN and ERNEST L. TEIOH, citizens of the United States, residing at New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

Our invention relates toimprovements in locks.

The object of the'invention isv to provide an exceedingly simple, compact and selfcontained locking apparatus which may be readily applied to any latch of the usual spindle operated type in such a manner that, without change or mutilation of the door carrying such latch, our improvement may be substituted for the ordinary outside knob spindle. In this connection the invention is of particular utility as applied to the door of a closed carriage, such as a limousine,

since'it furnishes an eective means for locking the door. This' and other advantages will appear tothe mechanic skilled in the art from a reading of the following description and an examination of the'v accompanying drawings, in which-7 Figure 1 is an edge view of a part of a door equipped with a spring latch bolt and the inside of the escutcheon. Fig. 7 illustrates a detail of construction. Fig. 8 is a view of 'the outer endfof the' knob shank section detached. Fig.' 9 is a view of the inner end of the handle section detached.

. 1 represents a door.

2 represents the usual spring latch bolt which may be mortised into the 'edge of the door in the usual manner. The latch mechanism includes the usual roll-back (not shown), which may be turned by the usual 4 'representsthe outside knob, the same being connected with the spindle 3 as hereinafter described, and in such manner that when the knob is turned, the spindle will be turned and the latch 2 retracted. Obvito the outside of the door.

to furnish two locking notches 13-13.

In the particular `form shown in the draw-l ings, 5 represents an inside knob which, in this instance, may be connected direct-1y to the inner end of the spindle 3, although, obviously, any wellknown independent connection may be made between the latch bolt and the inside knob so that said latch mayv be operated from the inside whether or not the outer knobis free.

Since our invention relates solely to the construction of the outer knob and the method of locking the same, the detailed description herein will be confined thereto.

The knob 4 may be of any suitable design, the one shown in the drawings being the usual conventional design for doors such as employed in carriages. tion of the knob is provided withy a central hub 6, suitably designed and hollowed out to receive a cylinder lock 7. This hub portion of the knob is made in two sect-ions, namely, the lock receiving section 6 and the shank sect-ion 8. The shank section is arranged to be detachably secured to the inner endy of the section 6 by screws 9 9.

10 is a hollow knob shank rigidly connected with the section 8 and projecting for-' wardly and carrying at lits inner end the knob spindle 3,y whereby, when the shank is turned, s'aid spindlewill be turned.

11- is an escutcheon arranged to be secured The escutcheon has an outside bearing sleeve 12, and at its inner sideis constructed in any 'suitable way In this instance, these'locking notches are provided by slotting an inward sleeve-like extension, clearly shown in Figs. 3, 4 and 6. The cylinder lock is provided with the usual plug 14C, the inner end of which is seen in Fig. 3. f

- 15 is what we lwill termy 'a plug extension. This plug extension is connectedy to the inner end of the cylinder lock plug by a spiral 16.

The knob shank l0 is provided with a longitudinal slot or slots 17. I l

18 is a pin carried by the plug extension The handle por-' 15, the ends of said pin standing in and movable to and fro in the slot 17. The locking notches 13--13 are of suitable size to receive the pin ends which project slightly above and below the-surface of the knob shank, as shown in Fig. 3. When the door.

is unlocked, the pin 18 will stand in the position shown in Fig. 3, wherein it will be seen to be projected into such a plane that it is entirely removed from the notches 13-13. When it is desired to lock the door, the cylinder lock plug 14 is turned by the use of a suitable key. As shown in the drawings, when this plug is turned clock-wise, it will draw the plug extension outwardly, that is, in such a direction as to draw the pin 18 into the locking notches 13-13 at the inner side of the fixed escutcheon, hence, when said pin stands in said position, the outer knob cannot be turned, for, as will be seen, the knob and knob shank being bound together, it follows that the knob shank being locked by reason of the pin 18, the knob is likewise locked.

In the preferred construction, and as seen in Fig. 5, the outer sleeve 12 of the escutcheon overstands the ends of the screws 9-9 when the parts are assembled, hence, it is impossible to remove the screws and separate the mechanism. Again, in applying such a lock, it is important to secure the escutcheon against removal, and to that end said escutcheon should preferably be secured to the door by throughbolts, or equivalent devices, as distinguished from mere wood screws, although it is obvious that wood screws would be entirely effective since they furnish one secure means of holding the escutcheon against turning, and that is all that is required so far asV concerns the locking of the door.

We have added a further improvement which is preferably provided to prevent jamming the lock. This improvement comprises a device for limiting the degree of turning movement of the plug. This is best seen in Figs. 3, 8 and 9, in which 19 represents a C-shaped piece located in a cavity in the shank section 8 of the knob hub and loosely surrounding the spindle 3. This C- shaped piece 19 carries a stop pin 20.

21 is a fixed stop pin carried'by the piece 8 and standing between the ends ofthe C- shaped member whereby it will be seen that the C-shaped member may be given a partial oscillation in either direction to a degree limited by the space between the ends of said C-shaped member.

22 is a stop pin on the plug 14. This stop pin 22 moves in a plane which will cause it to encounter the stop pin 2O on the C- shaped member. These parts are so arranged that the plug can be turned exactly one complete revolution in either direction by means of a suitable key, the purpose being to prevent said plug from being turned to such a degree in either direction as to either injure or the spiral. In other words, it permits the plug to be turned one complete revolution so as to bring the keyhole into a proper position to permit the withdrawal of the key.

We have shown herein a preferred form of our invention, it being obvious that many changes can be made without departing from the spirit or scope of the invention.

that we claim is:

1. In a lock of the character described, an oscillating latch controlling knob shank, a handle on said knob shank, a cylinder' lock within said knob shank including arotatable plug, a plug extension within said knob shank, a spiral connection between said plug and said extension, pin carried by said eX- tension and projecting laterally through said knob shank, said knob shank being slotted to permit said pin to be moved to and fro, an escutcheon supporting said knob shank, said pin being arranged to interlock with said escutcheon, means for preventing said plug from being turned in either direction substantially more than one complete revolution, said means comprising a C- shaped member within the shank knob, a stop carried by the knob shank and arranged between the ends of the C-shaped member, a stop shoulder on said C-shaped member and a stop shoulder on said plug arranged to coact with the stop shoulder on said C-shaped member. i

2. In a lock of the character described, an oscillating latch-controlling knob shank, a spindle secured to the inner end thereof, a handle on the knob shank, a cylinder lock within the knob shank including a rotatable plug, a slot in the side of the knob shank near the inner end thereof, a pin standing in said slot and projecting beyond the side of the shank, a device for carrying said pin arranged within the knob shank, a spiral connection between said pin-carrying device and said plug, an escutcheon surrounding said knob shank outside of said pin, two shoulders forming a pin-receiving recess besaid pin will be removed from said recess t6A permit said knob to be turned.

3. In a lock of the character described, an oscillating latch-controlling knob shank, a head on said knob shank, a cylinder lock within said head, al handle carried by said knob shank arranged out of line with said plug, to give free access to the latter, an escutcheon mounted on said knob shank, a longitudinal slot in the side of said knob `shank at the rear of said escutcheon, a pin tween them adj acentnto the end of said pinmovable in said slot, the outer end of said pin projecting outside of said shank, a carrier for said pin mounted within said knob shank, a spiral connection between Said plug and said pin carrier, and a stop shoulder on the back of said escutcheon arranged to block' said pin and in turn said knob shank from being oscillated in one direction when said plug has been turned in one direction to move said pin into a position be: hind said stop. v

4. In a lock of the character described, an oscillating latch-controlling knob shank, a head on said knob shank, a cylinder lock within said head, a handle carried by said knob shank arranged out of line with said plug, to give free access to the latter, an

yescutcheon mounted on said knob shank, a

longitudinal slot in the side of said knob movable in said slot, the outer end of said pin projecting outside of said shank, a carrier for said pin mounted within said knob shank, a spiral connection between said plug and said pin carrier, a stop shoulder on the back of said esoutcheon arranged to block said pin and in turn said knob shank from being oscillated in one direction when said plug has been turned in one direction to move said pin into a position behind said stop, and a second stop shoulder on the rear of said escutcheon to prevent said pin and said knob shank from being turned in an opposite direction when said pin stands between said stop shoulders.

PHILIP CORBIN.

ERNEST L. TEICH.

Witnesses:

WM. F. COLLINS, y CHAS. E. WETMORE.

Copies of this patentl may be obtained vfor five cents each, b'y addressing the Commissioner of Patents,

Washington, D. C. 

